Building Xcode iOS projects and creating *.ipa file from the command line

For our development process of iOS applications, we are using Jenkins set up on the Mac Mini Server, acting as a Continuous Integration (CI) server. It’s fairly easy to configure Jenkins for Xcode projects using Xcode Plugin - however, from time to time we had some issues with setting it up correctly. In order to debug them, we’ve decided to include small shell scripts that build our iPhone and iPad apps – to compare results between our development machines and CI environment.

With introduction of the Xcode 6, building apps from command line became more important for us. For some reason, Xcode 6 requires signing into the Apple Developer account while exporting iOS binaries (*.ipa files). It means that you can no longer export binaries from the Xcode having just provisioning profile and matching certificate, or do that without internet connection. However, you can do it easily with command line tools!

Installing command line tools

First of all, install Xcode command line tool if you haven’t done that yet. Just follow steps from excellent tutorial on osxdaily, or just open your favourite terminal app and type:

xcode-select --install

This command should open pop up – just click on ‘Install’ button to continue.

Building Xcode projects (*.xcodeproj file) from the command line

Let’s assume you have project named BestAppEver, freshly created with recent version of the Xcode. Navigate to the directory where *.xcodeproj file is located and, as a first step, let’s create *.xcarchive file:

By default, xcodebuild will choose *.xcdoeproj project form current directory. However, you must specify scheme – if you haven’t changed anything, it will have same name as a project has. That’s -scheme BestAppEver part. Next, we specify what should be done – here we first clean up with clean action, and then archive project – specified by -archivePath build/BestAppEver part.

Here we specify that we want to export the *.ipa file (-exportArchive -exportFormat ipa does this job), from the archive we created in previous step (-archivePath “build/BestAppEver.xcarchive”) to a file in build sub-directory (-exportPath “build/BestAppEver.ipa”), with a selected provisioning profile (-exportProvisioningProfile “ProvisioningProfileName”).

Building Xcode workspaces (*.xcworkspace file) from the command line

Of course, most of our projects nowdays are using dependencies managed via cocoapods tool. It means that we should specify which workspace we want to use during creation of an archive file – to do that, add -workspace BestAppEver.xcworkspace switch to the first command. Our build.sh script would then have following content: